Keypoints
●The hearing improved significantly postoperatively in AC and ABG test, mainly at low and mid frequencies.
●The hearing improvement in the tragus cartilage group was better from 250 to 1000 Hz, but the temporalis fascia group was significantly better from 2000 to 4000 Hz.
●The TORP group had the best hearing improvement.
●The canal wall-down tympanoplasty group had poorer postoperative BC outcomes compared to the tympanoplasty group at 4000 Hz.
●The influence of ossicular chain mechanics on BC is expressed at most as the improvement for the frequency of 2000 Hz.